Title:
CORROSION-RESISTING PERMANENT MAGNET AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JP3676513
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance the wear resistance and corrosion resistance of a R-Fe-B permanent magnet body the major phase of which is tetragonal system, by forming an AlN film with a specified film thickness on a Ti film of a specified film thickness formed on the surface of the permanent magnet body with an Al film with a specified film thickness in-between.
SOLUTION: The corrosion-resisting permanent magnet is manufactured as follows, a Ti film with a film thickness of 0,1-3.0μm is formed on the cleaned surface of a R-Fe-B permanent magnet body the major phase of which is tetragonal system by a thin film formation method. Thereafter, an Al film with a film thickness of 0.1-5μm is formed on the Ti film, and an AlN film with a film thickness of 0.5-10μm is formed on the Al film. By this constitution, stable magnet characteristics due to excellent corrosion resistance and wear resistance can be obtained.
Inventors:
Fumiaki Kikui
Masako Suzuki
Koji Yoshimura
Masako Suzuki
Koji Yoshimura
Application Number:
JP24920996A
Publication Date:
July 27, 2005
Filing Date:
August 30, 1996
Export Citation:
Assignee:
Neomax corporation
International Classes:
C23C14/06; C22C38/00; H01F1/053; H01F41/02; (IPC1-7): H01F1/053; C22C38/00; C23C14/06; H01F41/02
Domestic Patent References:
| JP61166116A | ||||
| JP6158351A | ||||
| JP10106817A | ||||
| JP7249509A | ||||
| JP7283017A | ||||
| JP2175859A | ||||
| JP1125813A |
Attorney, Agent or Firm:
Hiroaki Kono
Shigenobu Ikejo
Yoshiteru Oshida
Shigenobu Ikejo
Yoshiteru Oshida